Copper Sulfide Mining
Copper sulfide mines can cause severe impacts to drinking water aquifers, contamination of farmland, contamination and loss of fish and wildlife and their habitat, and risks to public health.
Sulfide Mining and Human Health
to the negative effects of sulfide mining.5 Ore that contains commercially desired metals often contains other metals includ-How Acid Mine Drainage is Generated Sulfide mining differs significantly from iron ore (taconite or ferrous) mining because it has the potential to generate acidic pH. Copper and nickel typically are bound to sulfur in rock.
Risks and costs to human health of sulfide-ore mining …
. This produces the more bio-toxic form of mercury, methylmercury, a known neurodevelopmental toxin. SOCN mining differs sig-nificantly from iron-ore (tacon te or …
Protect the Boundary Waters from sulfide-ore copper mining.
Proposed sulfide-ore copper mining threatens these waters and forests. A copper mine in the Boundary Waters watershed will pollute the Wilderness for generations to come, …
McCollum Reintroduces Bill to Permanently Protect …
The Boundary Waters Wilderness Protection and Pollution Prevention Actpermanently protects 234,328 acres of federal lands and waters within the Superior National Forest from risky sulfide-ore copper mining, including a plan by a Chilean mining company to extract critical minerals from the Superior National Forest and sell them to …
Protecting the Boundary Waters, Wildlife from Destructive Mining …
The Biden Administration's cancellation of sulfide-ore mining leases that threatened to leach sulfuric acid into the headwaters of the Rainy River Watershed will ensure that pristine wildlife habitat, clean drinking water, and abundant recreation opportunities are preserved in the Boundary Waters Canoe Area Wilderness.
Electrochemistry Encyclopedia -- Extracting metals …
The ultimate advance in recovering metals from sulfide ores would be to eliminate the mining stage and leach the ore-body where it is in the ground. This would involve pumping a leach solution underground and …
Copper Mining and Processing: Processing Copper Ores
Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and …
Copper-processing technologies: Growing global copper …
Finally, these technologies grant an opportunity to rethink greenfield mine design, reducing the grind-circuit requirements for same production and thereby offering savings across capital requirements and water and energy usage. Sulfide leaching. Leaching-based technologies have traditionally been applied to oxide or secondary …
Toxic Mining near the Boundary Waters (BWCA)
Toxic Mining Near the BWCA. Sulfide mining is the process of extracting trace amounts of copper, nickel and other metals from sulfide-bearing ores.
Draft Environmental Assessment Finds Major Risk to …
The U.S. Forest Service (USFS) released a draft environmental assessment today for a proposed 20-year ban on sulfide-ore copper mining on federal lands in the watershed of the Boundary Waters. A mineral withdrawal for the Boundary Waters watershed was first proposed in 2016 before being canceled at the last minute by the …
Sulfide copper and nickel mining should never be …
Sulfide copper and nickel mining should never be attempted on the border of the BWCA ... requiring more prescriptive mining rules and closer regulation than the historic iron ore mining. ...
Risks and costs to human health of sulfide-ore mining near …
Sulfide-ore copper nickel (SOCN) mining is being considered in water-rich Minnesota. Given pollution resulting from SOCN mining elsewhere, careful scrutiny is necessary examining the risks associat...
Sulfide Mineral
An understanding of the genesis of sulphide-ore deposits has developed through systematic geological, petrographic, compositional, and isotopic studies of ores and host rocks. ... The exposure of sulfide minerals contained in mine wastes to atmospheric oxygen results in the oxidation of these minerals. The oxidation reactions are …
What is the threat? | Save the Boundary Waters
Unlike iron mining, sulfide-ore copper mining has never been done in the state of Minnesota. This type of mining generates waste rock full of sulfates, which, when exposed to air and water, becomes sulphuric acid, and leaches toxins like heavy metals into the surrounding water.
Enhanced methods for nickel recovery from low-grade ores …
For sulfide ores, underground mining and concentrator operations become profitable with combined nickel, copper, and cobalt content above 2%. ... Application of three xanthates collectors on the recovery of nickel and pentlandite in a low-grade nickel sulfide ore using optimum flotation parameters.
Sulfide-ore Mining and Human Health in Minnesota
As 2021 was ushered in, so were new legislative and legal efforts affecting sulfide-ore mining. Amid state and federal legislation and lawsuits, healthcare providers in Minnesota have continued to stay abreast and weigh in on the potential human health effects of these decisions.
Nickel processing
Nickel processing - Extraction, Refining, Alloying: The extraction of nickel from ore follows much the same route as copper, and indeed, in a number of cases, similar processes and equipment are used. The major differences in equipment are the use of higher-temperature refractories and the increased cooling required to accommodate the higher operating …
Boundary Waters
Studies show that sulfide-ore copper mining along lakes and streams that flow into the Boundary Waters would put at risk not only premier fishing, hunting and other recreation on Superior National Forest lands, but also the sustainable economy of …
Choose this over sulfide mining: renewables, jobs and …
Recycling copper and other metals can help address the climate crisis, increase jobs, and provide the materials needed to replace fossil fuels with renewable energy.
Sulfide Ore
A 'Sulfide Ore' refers to ores containing minerals like chalcopyrite, sphalerite, and galena, which are difficult to separate selectively due to their fine-grained and complex composition.
9 Ore Deposits and Economic Minerals – Mineralogy
Runoff from waste piles or mine sites may create soil, groundwater, or surface water contamination. Many ore bodies, for example, are rich in sulfide minerals. After mining ceases, sulfur from the minerals can react with water and air to create acid mine drainage (Figure 9.13) or acid runoff from tailings piles.
Mine near Boundary Waters would pose "disproportionate" …
An environmental review by the U.S. Forest Service confirms that sulfide-ore mining near the Boundary Waters Canoe Area Wilderness in Minnesota poses an unacceptable danger, including acid mine drainage pollution that would cause "disproportionate adverse risk to Native American and low-income communities."
Science Desk: How Sulfide-Ore Copper Mines …
Have you ever wondered just how sulfide-ore copper mines pollute their surrounding environments? It's a good question, because in order to understand the environmental impacts to the Boundary Waters Canoe …
Full article: The Direct Leaching of Nickel Sulfide Flotation
The choice of unit operations and operating parameters is largely dictated by the type of ore being processed i.e. massive sulfide ore vs disseminated sulfide ore which subsequently influences the liberation size and choice of flotation collectors and depressants for separation of the values from the gangue.
Copper Sulfide Mining
Copper sulfide mines can cause severe impacts to drinking water aquifers, contamination of farmland, contamination and loss of fish and wildlife and their habitat, and risks to …
Science Desk: How Sulfide-Ore Copper Mines Pollute
In addition to tailings dam failures and pipeline leaks, sulfide-ore copper mines can pollute through seepage from underground pits and surface waste rock and sulfide-bearing ore. These pollution vectors are hard to …
Geochemical and mineralogical aspects of sulfide mine tailings
For example, common sources of As in sulfide ore deposits and associated mine wastes include arsenopyrite [FeAsS] and arsenian pyrite [Fe(As x S (1− x)) 2]. The mineralogical and geochemical composition of sulfide mine wastes largely controls their potential for negative environmental impacts.
Sulfide Mining Fact Sheet
What is sulfide mining? in sulfide-bearing rock. Mining metals in sulfide ores can be done in two ways: in underground mines where the ore deposits are very deep, and in open …
Boundary Waters Wilderness Protection and Pollution …
The bill is focused on sulfide-ore copper mining in the headwaters of the Boundary Waters and Voyageurs National Park. The legislation: Does not limit taconite or iron-ore mining anywhere in the State of Minnesota. Does not affect sulfide-ore copper mining projects outside the Rainy River Drainage Basin.
Microsoft Word
Sulfide Mining Process The sulfide mining process consists of: exploration, site preparation, mining, beneficiation, waste disposal and reclamation: Exploration. Computer modeling, satellite images and surface research are used to identify potential ore bodies. Then, to determine viability of a mine site, verification of the subsurface
A fresh approach to sulfide ores
The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like …
Sulfide Ore Mining in the Boundary Waters
Metallic sulfide mining is the process of extracting metals such as nickel, gold, and copper from sulfide-rich ore. After extracting metal from the rock, the waste rock that is left is called sulfides.
The whole truth about Talon Metals and Rio Tinto
Sulfide ore mining proposed by the companies creates the same unresolved problem. Minnesotans need to know more.